One-piece cast-metal wheel and method of making the same



B. L. SMITH.

EEL AND MEfHOD OF MAKING THE SAME. 'APPuqAnbmmso JUNE 3. 1917.

ONE-PIECE CAST METAL WH Patented Dec. 27, 1921 ATTORNEYS UNITED STATES BURNS LYMAN smart, or sYnAcUsrt Ew Yoax.

ONE-PIECE CAST-METAL WHEEL METRO D GEMAKING- THE SAME.

Application filed me a,

To all whom it may concern:

lie it known that I, BURNS LYMAN SMITH, a citizen of the United States, at Syracui in the county of Onondaga and State of New York, have invented a certain new and useiul One-Piece Cast-Metal Wheel and Method of Making the Same, of which the following a specification. i

This invention relates to wheels, and has for its object a simple and efficient construction whereby distortion due to unequal expansion and contraction of parts of the wheelis reduced to a minimum, and it consists in the novel features hereinafter set forth and claimed. 1

In describing this invention, reference is had to the accompanying drawings in which like characters designate corresponding parts in all the views.

Figure l is a side elevation, partly broken away'and in section, of a wheel embodying a referable form of my invention.

igail is a sectional view on line 2-2,

Fig. 1. I

. his cast metal wheel. is usually composed ola single piece and is formed at intervals with outwardly extending slots for preventtraction of the wheel while being manufactured. Each slot is open at one end, "and usually at both ends.

1 designates a hollow, cast one iece wheel of the type described in my atent No. 1,178,959, April 11, 1916. This wheel preferablyv comprises a hollow hub portion 2, a hollow rim portion 3 and spokes 4, one of saidportions, as the hub 2, being provided with slots 5 extending outwardly in substaritially radial directions from thecentral opening of the hub. The slots 5 usually extend entirely through the hub and divide the same into segments, the lines of division between the segments; extendimp between some of the spokes.

The hollow hub 2 may be provided. with suitable reinforcing webs 6 and the hollow .rim with radially extending webs 7 as in my above-mentioned patent.

8 desi nates the segments into which the hub is (fivided by the slots '5, and usually the segments are provided at their ends with walls 9 on opposite sides of the lines of division, that is, at opposite sides of the slots 5,

although these walls 9 may be wholly or r partly omitted.

A wheel constructed as described is par- Specificatlon of Letters Patent.

and a resident cast metal provided with slots extending ing distortion (luring expansion and con- U Patented Dec. 27, 1921.

1917. Serial No. 173,538.

tic-ularly advantageous, because after it has been cast there is a minimum necessity for exercising care preliminary to and during its final heat treatment.

What I claim is:

l. A wheel having spokes and rim and hub portions rigid with the spokes, one of .said portions being cast in one piece and the other divided at intervals along lines ex: tending toward its center, the lines of division extending entirely through said on tion whereby said portion is divided into sections separated at all oints from each r other, substantially as an for the purpose; specified.

2; A one piece wheel having spokes and rim and hub portions rigid with the spokes, one of said portions being divided at intervals along planes extending in substantially radial directions and intersecting the inner and outer circumferential faces of said portion andthereby dividing said portion into separated fromeach other, substantially as and for the purpose segments which are set forth.

3. A hollow cast metal wheel having a hub outwardly from its central. opening and openin through the outer circumference of the hu thereby dividing the hub into segments, substantially as and for the purpose described.

4. A one piece cast metal spoke wheel having a hub integral with the spokes, the hub being divided into segments along planes extending in substantially radial directions between the spokes, substantially as and for the purpose specified.

5. A cast metal wheel having inte ral'rim, hub and spokes, the hubbeing divided be tween the spokes into segments, substantially as and for the purpose set forth.

6. A one piece cast metal wheel havin integral hollow rim, hub and spokes, the hu having slots extending outwardly from its central opening and between the spokes, substantially as and for the purpose specified,

7. A cast metal wheel havin a hollow rim and hub portions, one of said portions at their ends opposed to the end walls of 10 the adjoining segments, substantially as and for the purpose specified.

In testimony whereof, I have hgreunto signed my'name, at Syracuse, in the county 'ofOnonda a, and State of New York, this 16 1st day of une, 1917.

BURNS LYMAN SMITH. 

